Trigonometric Ratios for 14π: Solving for sin, cos, and tan

[fghtffyrdmns]

Homework Statement

Find the trigonometric ratios $$sin\theta, cos\theta, tan\theta for the angle \theta = 14\pi.$$ If a ratio does not exist or is undefined, write "DNE".

The Attempt at a Solution

I know that the other equivalent angle for 15pi is just pi. But I do not know how to write the ratios. From the unit circle, I know that $$tan\theta = 0/-1. Since tan = sin/cos.$$

 

[Mark44]

Homework Statement

Find the trigonometric ratios $$sin\theta, cos\theta, tan\theta for the angle \theta = 14\pi.$$ If a ratio does not exist or is undefined, write "DNE".

The Attempt at a Solution

I know that the other equivalent angle for 15pi is just pi. But I do not know how to write the ratios. From the unit circle, I know that $$tan\theta = 0/-1. Since tan = sin/cos.$$

$$OK, so sin(15pi) = sin(pi) = ?<br /> What do you get for the other two functions?$$

 

[fghtffyrdmns]

OK, so sin(15pi) = sin(pi) = ?
What do you get for the other two functions?

sin(pi)= 0
cos (pi) = -1
tan (pi) =0.

Is that all?